Ruger has made a lot of .22 DA revolvers in the SP101 series over the years.
The current version is the SP with a 4.20-inch half-lugged barrel, 8-round cylinder, fiber optic front blade, and fully adjustable rear sight.
In my opinion it's the best one they've ever done.

There were some intial problems last year with some of the first ones Ruger shipped with improperly cut forcing cones that caused severe leading & affected accuracy, but once it was brought to their attention they corrected the problem & the current guns are fine.

The design & dimensions of the SP require a heavy double-action trigger pull for reliable ignition.
Some have had success with lighter after-market springs, some have created erratic ignition.